Mortar-laying machine



S. JENSEN MORTAR LAYING MACHINE Jan.

Filed p il 14. 1926 Patented Jan. 11, 1927.

UNITED STATES. PATENT OFFICE.

SEVEBIN JENSEN, OF ST. PAUL,

J nnmnsora.

MORTAR-LAYING MACHINE.

Application filed April 14, 1926. Serial No. 101,928.

My invention relates to a mortar laying machine and the object is to provide a sim le efficient and inex ensive device f of my device about as on line 4.4 in Fig. 3.

10 Fig, 5 is a transverse section of my device looking rearwardly about as on line. 55 in Fig. 4.

Referring to the drawing by reference numerals I have illustrated a wall or foundation of the usual well known types of'cast blocks having central vertical apertures 11. These blocks may have a plain or fancy outside facing but in either case they are made withsmooth outward faces or rims 10 along their outwardly exposed edges.- The blocks are laid in successive vertical layers and their upper faces have two hori zontally spaced longitudinal faces on which mortar is laid in two strips 12 (Fig. 1) for the next layer of blocks to be laid on. These strips of mortar must be applied with rapidity and accuracy and be of uniform thickness, requiring a considerable amount of expensive skilled labor when done hv' 85 hand. My device lays the strips of mortar quickly and automatically a predetermined thickness, as follows The device comprises a wheel supported hopper traveling as, from right to left in Fig. 1. 'This hop er consists of an outside wall 13 and an inside wall 14 between which are fixed a hopper bottom consisting of two sloping sheet metal bottom sections 15 and 15 the lower ends of which are in spaced relation longitudinally of the hopper and at the lower central part of the latter. Between said lower edges of the'bottoms is fixed a preferably sheet metal, inverted V- shaped guide or ridge memberlfi narrower than the hopper bottoms and thus providing two transversely spaced outlets 17 between said central guide-and the adjacent side .walls. A

The device is supported by and'travels on two front wheels 18 on a. shaft 19, said slightly spaced relation to'the outer edges wheels located preferably one adjacent the inner side of each wall 13-14, and two rear wheels 20 on a shaft 21 but'spaced closer than the front wheels so as to travel on the wall blocks close to their apertures 11 {whereas the front wheels travel close to the outer edges of the blocks.

13 is a guide flange suitably fixed on the lower outside rtion ofwall 13 and extending below an parallel to said wall to engage the upper outwardly facing rim 10 of the blocks on which the device is moved, when in use..

22 are two horizontal, parallel slide frames each extendin rearwardly from one of the outlets 17 and suitably fixed in the device. The lower part of each of these frames comprises a downwardly opening channel 22 and the upper part has a slot 22 parallel to and above said channel for 7 receiving slidably a flat bar 23. These bars project rearwardly from the frames 22 at all times and their forward ends are adapted to shut oif the openings 17 bymanipulating the rear end of the bars. The depth of said channels 22 determines the thickness of mortar laid on the wall, as the mortar leaving apertures 17 is pressed under the channel as the device is rolled forward, one strip or ribbon 12 of mortar being thus laid 'on top of the alined blocks and adjacent each edge thereof. The thickness of mortar may be regulated as desired by simply providing pairs of shims 24 of various thicknesses and adapted to be secured to the under side of the web of each channel 22 by suitable countersunk machine screws 25 (see Fig. 5).

It is obvious, particularly in Figs. 3 and 5, that the strips of mortar are laid in of the blocks, but the mortar thus laid is of course spread out by the weight of the blocks 'laid thereon so that the mortar will spread out perhaps beyond the faces of the blocks and .may subsequently be trimmed and pointed.

In the use of my device mortar of a suitable consistency. is filled in the hopper as up to line 26 in Fig. 4 where the slide is shown retracted and the mortar drops down, as arrows 17, into the channels 22. The top of each channel is smooth and as the device is rolled along the top of the wall this smooth top or web of the channel smooths the-top of the mortar strip-laid on the wall.

' side walls, means in said hopper bottom for ets, a mortar guiding device regulating the uiding mortar placed therein to said outal'nount of mortar going through said outlets when the device is rolled forward on its wheels, means for closing said outlets and means for guiding the device on a horizontal line longitudinally of a wall or row of wall blocks, said mortar guiding means comprising for each outlet an inverted channel member of U-shape in crosssection and extending rearwardly from each hopper outlet and said means for closing each hopper outlet comprising a slide extending rearwardly parallel to each said channel member and accessible rearwardly 01" the channel to be pushed forward to c ose said outlet; and means for varying the thickness of mortar laid on the wall under said U-shaped channel members;

2. In a mortar laying device an elongated box-like body, wheels sup orting said body, a hopper bottom in said ody' with outlets in its lower central part and adjacent the side walls, means in said hop er bottom for guiding mortar to said outets, a mortar guiding device for regulating the, quantity of mortar goin through said outlets when the device is r0 led forward, means for closing said outlets and means for guiding the device on a horizontal line longitudinally of a wall or row of wall blocks, said mortar guiding means comprising for each outlet an inverted fixed channel member of U-shapc in cross section and extending rearwardly from each hopper outlet and said means for closing each hopper outlet comprises a slide extending rearwardly parallel to each said channel member and accessible rearwardly of the channel to be pushed forward to close said outlet; and means for varying the thickness of mortar laid on the wall under said channel members, said latter means consisting of shims of various thicknesses adapted to be removably secured to the under side of the horizontal webs of said channels.

In testimony whereof I aflix my signature.

' SEVERIN JENSEN. 

